ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.app.Activity;
   6import android.app.FragmentManager;
   7import android.content.SharedPreferences;
   8import android.content.pm.PackageManager;
   9import android.databinding.DataBindingUtil;
  10import android.net.Uri;
  11import android.os.Build;
  12import android.preference.PreferenceManager;
  13import android.provider.MediaStore;
  14import android.support.annotation.IdRes;
  15import android.support.annotation.NonNull;
  16import android.support.annotation.StringRes;
  17import android.support.v7.app.AlertDialog;
  18import android.app.Fragment;
  19import android.app.PendingIntent;
  20import android.content.Context;
  21import android.content.DialogInterface;
  22import android.content.Intent;
  23import android.content.IntentSender.SendIntentException;
  24import android.os.Bundle;
  25import android.os.Handler;
  26import android.os.SystemClock;
  27import android.support.v13.view.inputmethod.InputConnectionCompat;
  28import android.support.v13.view.inputmethod.InputContentInfoCompat;
  29import android.text.Editable;
  30import android.text.TextUtils;
  31import android.util.Log;
  32import android.view.ContextMenu;
  33import android.view.ContextMenu.ContextMenuInfo;
  34import android.view.Gravity;
  35import android.view.LayoutInflater;
  36import android.view.Menu;
  37import android.view.MenuInflater;
  38import android.view.MenuItem;
  39import android.view.MotionEvent;
  40import android.view.View;
  41import android.view.View.OnClickListener;
  42import android.view.ViewGroup;
  43import android.view.inputmethod.EditorInfo;
  44import android.view.inputmethod.InputMethodManager;
  45import android.widget.AbsListView;
  46import android.widget.AbsListView.OnScrollListener;
  47import android.widget.AdapterView;
  48import android.widget.AdapterView.AdapterContextMenuInfo;
  49import android.widget.CheckBox;
  50import android.widget.ListView;
  51import android.widget.PopupMenu;
  52import android.widget.TextView.OnEditorActionListener;
  53import android.widget.Toast;
  54
  55import java.util.ArrayList;
  56import java.util.Arrays;
  57import java.util.Collections;
  58import java.util.HashSet;
  59import java.util.Iterator;
  60import java.util.List;
  61import java.util.Set;
  62import java.util.UUID;
  63import java.util.concurrent.atomic.AtomicBoolean;
  64
  65import eu.siacs.conversations.Config;
  66import eu.siacs.conversations.R;
  67import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  68import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  69import eu.siacs.conversations.databinding.FragmentConversationBinding;
  70import eu.siacs.conversations.entities.Account;
  71import eu.siacs.conversations.entities.Blockable;
  72import eu.siacs.conversations.entities.Contact;
  73import eu.siacs.conversations.entities.Conversation;
  74import eu.siacs.conversations.entities.Conversational;
  75import eu.siacs.conversations.entities.DownloadableFile;
  76import eu.siacs.conversations.entities.Message;
  77import eu.siacs.conversations.entities.MucOptions;
  78import eu.siacs.conversations.entities.MucOptions.User;
  79import eu.siacs.conversations.entities.Presence;
  80import eu.siacs.conversations.entities.ReadByMarker;
  81import eu.siacs.conversations.entities.Transferable;
  82import eu.siacs.conversations.entities.TransferablePlaceholder;
  83import eu.siacs.conversations.http.HttpDownloadConnection;
  84import eu.siacs.conversations.persistance.FileBackend;
  85import eu.siacs.conversations.services.MessageArchiveService;
  86import eu.siacs.conversations.services.XmppConnectionService;
  87import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
  88import eu.siacs.conversations.ui.adapter.MessageAdapter;
  89import eu.siacs.conversations.ui.util.ActivityResult;
  90import eu.siacs.conversations.ui.util.Attachment;
  91import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  92import eu.siacs.conversations.ui.util.DateSeparator;
  93import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
  94import eu.siacs.conversations.ui.util.ListViewUtils;
  95import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  96import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
  97import eu.siacs.conversations.ui.util.PendingItem;
  98import eu.siacs.conversations.ui.util.PresenceSelector;
  99import eu.siacs.conversations.ui.util.ScrollState;
 100import eu.siacs.conversations.ui.util.SendButtonAction;
 101import eu.siacs.conversations.ui.util.SendButtonTool;
 102import eu.siacs.conversations.ui.util.ShareUtil;
 103import eu.siacs.conversations.ui.widget.EditMessage;
 104import eu.siacs.conversations.utils.GeoHelper;
 105import eu.siacs.conversations.utils.MessageUtils;
 106import eu.siacs.conversations.utils.NickValidityChecker;
 107import eu.siacs.conversations.utils.Patterns;
 108import eu.siacs.conversations.utils.QuickLoader;
 109import eu.siacs.conversations.utils.StylingHelper;
 110import eu.siacs.conversations.utils.TimeframeUtils;
 111import eu.siacs.conversations.utils.UIHelper;
 112import eu.siacs.conversations.xmpp.XmppConnection;
 113import eu.siacs.conversations.xmpp.chatstate.ChatState;
 114import eu.siacs.conversations.xmpp.jingle.JingleConnection;
 115import rocks.xmpp.addr.Jid;
 116
 117import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 118import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
 119import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
 120
 121
 122public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 123
 124
 125    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 126    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 127    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 128    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 129    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 130    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 131    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 132    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 133    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 134    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 135    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 136    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 137    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 138    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 139    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 140
 141    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 142    public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 143    public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 144    public static final String STATE_PHOTO_URI = ConversationFragment.class.getName() + ".media_previews";
 145    public static final String STATE_MEDIA_PREVIEWS = ConversationFragment.class.getName() + ".take_photo_uri";
 146    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 147
 148    private final List<Message> messageList = new ArrayList<>();
 149    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 150    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 151    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 152    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 153    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 154    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 155    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 156    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 157    public Uri mPendingEditorContent = null;
 158    protected MessageAdapter messageListAdapter;
 159    private MediaPreviewAdapter mediaPreviewAdapter;
 160    private String lastMessageUuid = null;
 161    private Conversation conversation;
 162    private FragmentConversationBinding binding;
 163    private Toast messageLoaderToast;
 164    private ConversationsActivity activity;
 165    private boolean reInitRequiredOnStart = true;
 166    private OnClickListener clickToMuc = new OnClickListener() {
 167
 168        @Override
 169        public void onClick(View v) {
 170            Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 171            intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 172            intent.putExtra("uuid", conversation.getUuid());
 173            startActivity(intent);
 174        }
 175    };
 176    private OnClickListener leaveMuc = new OnClickListener() {
 177
 178        @Override
 179        public void onClick(View v) {
 180            activity.xmppConnectionService.archiveConversation(conversation);
 181        }
 182    };
 183    private OnClickListener joinMuc = new OnClickListener() {
 184
 185        @Override
 186        public void onClick(View v) {
 187            activity.xmppConnectionService.joinMuc(conversation);
 188        }
 189    };
 190    private OnClickListener enterPassword = new OnClickListener() {
 191
 192        @Override
 193        public void onClick(View v) {
 194            MucOptions muc = conversation.getMucOptions();
 195            String password = muc.getPassword();
 196            if (password == null) {
 197                password = "";
 198            }
 199            activity.quickPasswordEdit(password, value -> {
 200                activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 201                return null;
 202            });
 203        }
 204    };
 205    private OnScrollListener mOnScrollListener = new OnScrollListener() {
 206
 207        @Override
 208        public void onScrollStateChanged(AbsListView view, int scrollState) {
 209            if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 210                fireReadEvent();
 211            }
 212        }
 213
 214        @Override
 215        public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 216            toggleScrollDownButton(view);
 217            synchronized (ConversationFragment.this.messageList) {
 218                if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 219                    long timestamp;
 220                    if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 221                        timestamp = messageList.get(1).getTimeSent();
 222                    } else {
 223                        timestamp = messageList.get(0).getTimeSent();
 224                    }
 225                    activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 226                        @Override
 227                        public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 228                            if (ConversationFragment.this.conversation != conversation) {
 229                                conversation.messagesLoaded.set(true);
 230                                return;
 231                            }
 232                            runOnUiThread(() -> {
 233                                synchronized (messageList) {
 234                                    final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 235                                    Message message = null;
 236                                    int childPos;
 237                                    for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 238                                        message = messageList.get(oldPosition + childPos);
 239                                        if (message.getType() != Message.TYPE_STATUS) {
 240                                            break;
 241                                        }
 242                                    }
 243                                    final String uuid = message != null ? message.getUuid() : null;
 244                                    View v = binding.messagesView.getChildAt(childPos);
 245                                    final int pxOffset = (v == null) ? 0 : v.getTop();
 246                                    ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 247                                    try {
 248                                        updateStatusMessages();
 249                                    } catch (IllegalStateException e) {
 250                                        Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 251                                    }
 252                                    messageListAdapter.notifyDataSetChanged();
 253                                    int pos = Math.max(getIndexOf(uuid, messageList), 0);
 254                                    binding.messagesView.setSelectionFromTop(pos, pxOffset);
 255                                    if (messageLoaderToast != null) {
 256                                        messageLoaderToast.cancel();
 257                                    }
 258                                    conversation.messagesLoaded.set(true);
 259                                }
 260                            });
 261                        }
 262
 263                        @Override
 264                        public void informUser(final int resId) {
 265
 266                            runOnUiThread(() -> {
 267                                if (messageLoaderToast != null) {
 268                                    messageLoaderToast.cancel();
 269                                }
 270                                if (ConversationFragment.this.conversation != conversation) {
 271                                    return;
 272                                }
 273                                messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 274                                messageLoaderToast.show();
 275                            });
 276
 277                        }
 278                    });
 279
 280                }
 281            }
 282        }
 283    };
 284    private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 285        @Override
 286        public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 287            // try to get permission to read the image, if applicable
 288            if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 289                try {
 290                    inputContentInfo.requestPermission();
 291                } catch (Exception e) {
 292                    Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 293                    Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 294                    ).show();
 295                    return false;
 296                }
 297            }
 298            if (hasPermissions(REQUEST_ADD_EDITOR_CONTENT, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 299                attachEditorContentToConversation(inputContentInfo.getContentUri());
 300            } else {
 301                mPendingEditorContent = inputContentInfo.getContentUri();
 302            }
 303            return true;
 304        }
 305    };
 306    private Message selectedMessage;
 307    private OnClickListener mEnableAccountListener = new OnClickListener() {
 308        @Override
 309        public void onClick(View v) {
 310            final Account account = conversation == null ? null : conversation.getAccount();
 311            if (account != null) {
 312                account.setOption(Account.OPTION_DISABLED, false);
 313                activity.xmppConnectionService.updateAccount(account);
 314            }
 315        }
 316    };
 317    private OnClickListener mUnblockClickListener = new OnClickListener() {
 318        @Override
 319        public void onClick(final View v) {
 320            v.post(() -> v.setVisibility(View.INVISIBLE));
 321            if (conversation.isDomainBlocked()) {
 322                BlockContactDialog.show(activity, conversation);
 323            } else {
 324                unblockConversation(conversation);
 325            }
 326        }
 327    };
 328    private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 329    private OnClickListener mAddBackClickListener = new OnClickListener() {
 330
 331        @Override
 332        public void onClick(View v) {
 333            final Contact contact = conversation == null ? null : conversation.getContact();
 334            if (contact != null) {
 335                activity.xmppConnectionService.createContact(contact, true);
 336                activity.switchToContactDetails(contact);
 337            }
 338        }
 339    };
 340    private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 341    private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 342        @Override
 343        public void onClick(View v) {
 344            final Contact contact = conversation == null ? null : conversation.getContact();
 345            if (contact != null) {
 346                activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 347                        activity.xmppConnectionService.getPresenceGenerator()
 348                                .sendPresenceUpdatesTo(contact));
 349                hideSnackbar();
 350            }
 351        }
 352    };
 353    protected OnClickListener clickToDecryptListener = new OnClickListener() {
 354
 355        @Override
 356        public void onClick(View v) {
 357            PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 358            if (pendingIntent != null) {
 359                try {
 360                    getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 361                            REQUEST_DECRYPT_PGP,
 362                            null,
 363                            0,
 364                            0,
 365                            0);
 366                } catch (SendIntentException e) {
 367                    Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 368                    conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 369                }
 370            }
 371            updateSnackBar(conversation);
 372        }
 373    };
 374    private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 375    private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 376        if (actionId == EditorInfo.IME_ACTION_SEND) {
 377            InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 378            if (imm != null && imm.isFullscreenMode()) {
 379                imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 380            }
 381            sendMessage();
 382            return true;
 383        } else {
 384            return false;
 385        }
 386    };
 387    private OnClickListener mScrollButtonListener = new OnClickListener() {
 388
 389        @Override
 390        public void onClick(View v) {
 391            stopScrolling();
 392            setSelection(binding.messagesView.getCount() - 1, true);
 393        }
 394    };
 395    private OnClickListener mSendButtonListener = new OnClickListener() {
 396
 397        @Override
 398        public void onClick(View v) {
 399            Object tag = v.getTag();
 400            if (tag instanceof SendButtonAction) {
 401                SendButtonAction action = (SendButtonAction) tag;
 402                switch (action) {
 403                    case TAKE_PHOTO:
 404                    case RECORD_VIDEO:
 405                    case SEND_LOCATION:
 406                    case RECORD_VOICE:
 407                    case CHOOSE_PICTURE:
 408                        attachFile(action.toChoice());
 409                        break;
 410                    case CANCEL:
 411                        if (conversation != null) {
 412                            if (conversation.setCorrectingMessage(null)) {
 413                                binding.textinput.setText("");
 414                                binding.textinput.append(conversation.getDraftMessage());
 415                                conversation.setDraftMessage(null);
 416                            } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 417                                conversation.setNextCounterpart(null);
 418                            }
 419                            updateChatMsgHint();
 420                            updateSendButton();
 421                            updateEditablity();
 422                        }
 423                        break;
 424                    default:
 425                        sendMessage();
 426                }
 427            } else {
 428                sendMessage();
 429            }
 430        }
 431    };
 432    private int completionIndex = 0;
 433    private int lastCompletionLength = 0;
 434    private String incomplete;
 435    private int lastCompletionCursor;
 436    private boolean firstWord = false;
 437    private Message mPendingDownloadableMessage;
 438
 439    private static ConversationFragment findConversationFragment(Activity activity) {
 440        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 441        if (fragment != null && fragment instanceof ConversationFragment) {
 442            return (ConversationFragment) fragment;
 443        }
 444        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 445        if (fragment != null && fragment instanceof ConversationFragment) {
 446            return (ConversationFragment) fragment;
 447        }
 448        return null;
 449    }
 450
 451    public static void startStopPending(Activity activity) {
 452        ConversationFragment fragment = findConversationFragment(activity);
 453        if (fragment != null) {
 454            fragment.messageListAdapter.startStopPending();
 455        }
 456    }
 457
 458    public static void downloadFile(Activity activity, Message message) {
 459        ConversationFragment fragment = findConversationFragment(activity);
 460        if (fragment != null) {
 461            fragment.startDownloadable(message);
 462        }
 463    }
 464
 465    public static void registerPendingMessage(Activity activity, Message message) {
 466        ConversationFragment fragment = findConversationFragment(activity);
 467        if (fragment != null) {
 468            fragment.pendingMessage.push(message);
 469        }
 470    }
 471
 472    public static void openPendingMessage(Activity activity) {
 473        ConversationFragment fragment = findConversationFragment(activity);
 474        if (fragment != null) {
 475            Message message = fragment.pendingMessage.pop();
 476            if (message != null) {
 477                fragment.messageListAdapter.openDownloadable(message);
 478            }
 479        }
 480    }
 481
 482    public static Conversation getConversation(Activity activity) {
 483        return getConversation(activity, R.id.secondary_fragment);
 484    }
 485
 486    private static Conversation getConversation(Activity activity, @IdRes int res) {
 487        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 488        if (fragment != null && fragment instanceof ConversationFragment) {
 489            return ((ConversationFragment) fragment).getConversation();
 490        } else {
 491            return null;
 492        }
 493    }
 494
 495    public static ConversationFragment get(Activity activity) {
 496        FragmentManager fragmentManager = activity.getFragmentManager();
 497        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 498        if (fragment != null && fragment instanceof ConversationFragment) {
 499            return (ConversationFragment) fragment;
 500        } else {
 501            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 502            return fragment != null && fragment instanceof ConversationFragment ? (ConversationFragment) fragment : null;
 503        }
 504    }
 505
 506    public static Conversation getConversationReliable(Activity activity) {
 507        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 508        if (conversation != null) {
 509            return conversation;
 510        }
 511        return getConversation(activity, R.id.main_fragment);
 512    }
 513
 514    private static boolean allGranted(int[] grantResults) {
 515        for (int grantResult : grantResults) {
 516            if (grantResult != PackageManager.PERMISSION_GRANTED) {
 517                return false;
 518            }
 519        }
 520        return true;
 521    }
 522
 523    private static boolean writeGranted(int[] grantResults, String[] permission) {
 524        for (int i = 0; i < grantResults.length; ++i) {
 525            if (Manifest.permission.WRITE_EXTERNAL_STORAGE.equals(permission[i])) {
 526                return grantResults[i] == PackageManager.PERMISSION_GRANTED;
 527            }
 528        }
 529        return false;
 530    }
 531
 532    private static String getFirstDenied(int[] grantResults, String[] permissions) {
 533        for (int i = 0; i < grantResults.length; ++i) {
 534            if (grantResults[i] == PackageManager.PERMISSION_DENIED) {
 535                return permissions[i];
 536            }
 537        }
 538        return null;
 539    }
 540
 541    private static boolean scrolledToBottom(AbsListView listView) {
 542        final int count = listView.getCount();
 543        if (count == 0) {
 544            return true;
 545        } else if (listView.getLastVisiblePosition() == count - 1) {
 546            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 547            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 548        } else {
 549            return false;
 550        }
 551    }
 552
 553    private void toggleScrollDownButton() {
 554        toggleScrollDownButton(binding.messagesView);
 555    }
 556
 557    private void toggleScrollDownButton(AbsListView listView) {
 558        if (conversation == null) {
 559            return;
 560        }
 561        if (scrolledToBottom(listView)) {
 562            lastMessageUuid = null;
 563            hideUnreadMessagesCount();
 564        } else {
 565            binding.scrollToBottomButton.setEnabled(true);
 566            binding.scrollToBottomButton.show();
 567            if (lastMessageUuid == null) {
 568                lastMessageUuid = conversation.getLatestMessage().getUuid();
 569            }
 570            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 571                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 572            }
 573        }
 574    }
 575
 576    private int getIndexOf(String uuid, List<Message> messages) {
 577        if (uuid == null) {
 578            return messages.size() - 1;
 579        }
 580        for (int i = 0; i < messages.size(); ++i) {
 581            if (uuid.equals(messages.get(i).getUuid())) {
 582                return i;
 583            } else {
 584                Message next = messages.get(i);
 585                while (next != null && next.wasMergedIntoPrevious()) {
 586                    if (uuid.equals(next.getUuid())) {
 587                        return i;
 588                    }
 589                    next = next.next();
 590                }
 591
 592            }
 593        }
 594        return -1;
 595    }
 596
 597    private ScrollState getScrollPosition() {
 598        final ListView listView = this.binding.messagesView;
 599        if (listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 600            return null;
 601        } else {
 602            final int pos = listView.getFirstVisiblePosition();
 603            final View view = listView.getChildAt(0);
 604            if (view == null) {
 605                return null;
 606            } else {
 607                return new ScrollState(pos, view.getTop());
 608            }
 609        }
 610    }
 611
 612    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 613        if (scrollPosition != null) {
 614
 615            this.lastMessageUuid = lastMessageUuid;
 616            if (lastMessageUuid != null) {
 617                binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 618            }
 619            //TODO maybe this needs a 'post'
 620            this.binding.messagesView.setSelectionFromTop(scrollPosition.position, scrollPosition.offset);
 621            toggleScrollDownButton();
 622        }
 623    }
 624
 625    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 626        if (conversation == null) {
 627            return;
 628        }
 629        activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 630
 631            @Override
 632            public void success(Message message) {
 633
 634            }
 635
 636            @Override
 637            public void error(int errorCode, Message object) {
 638                //TODO show possible pgp error
 639            }
 640
 641            @Override
 642            public void userInputRequried(PendingIntent pi, Message object) {
 643
 644            }
 645        });
 646    }
 647
 648    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 649        if (conversation == null) {
 650            return;
 651        }
 652        final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 653        prepareFileToast.show();
 654        activity.delegateUriPermissionsToService(uri);
 655        activity.xmppConnectionService.attachFileToConversation(conversation, uri, type, new UiInformableCallback<Message>() {
 656            @Override
 657            public void inform(final String text) {
 658                hidePrepareFileToast(prepareFileToast);
 659                runOnUiThread(() -> activity.replaceToast(text));
 660            }
 661
 662            @Override
 663            public void success(Message message) {
 664                runOnUiThread(() -> activity.hideToast());
 665                hidePrepareFileToast(prepareFileToast);
 666            }
 667
 668            @Override
 669            public void error(final int errorCode, Message message) {
 670                hidePrepareFileToast(prepareFileToast);
 671                runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 672
 673            }
 674
 675            @Override
 676            public void userInputRequried(PendingIntent pi, Message message) {
 677                hidePrepareFileToast(prepareFileToast);
 678            }
 679        });
 680    }
 681
 682    public void attachEditorContentToConversation(Uri uri) {
 683        mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 684        toggleInputMethod();
 685    }
 686
 687    private void attachImageToConversation(Conversation conversation, Uri uri) {
 688        if (conversation == null) {
 689            return;
 690        }
 691        final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 692        prepareFileToast.show();
 693        activity.delegateUriPermissionsToService(uri);
 694        activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 695                new UiCallback<Message>() {
 696
 697                    @Override
 698                    public void userInputRequried(PendingIntent pi, Message object) {
 699                        hidePrepareFileToast(prepareFileToast);
 700                    }
 701
 702                    @Override
 703                    public void success(Message message) {
 704                        hidePrepareFileToast(prepareFileToast);
 705                    }
 706
 707                    @Override
 708                    public void error(final int error, Message message) {
 709                        hidePrepareFileToast(prepareFileToast);
 710                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 711                    }
 712                });
 713    }
 714
 715    private void hidePrepareFileToast(final Toast prepareFileToast) {
 716        if (prepareFileToast != null && activity != null) {
 717            activity.runOnUiThread(prepareFileToast::cancel);
 718        }
 719    }
 720
 721    private void sendMessage() {
 722        if (mediaPreviewAdapter.hasAttachments()) {
 723            commitAttachments();
 724            return;
 725        }
 726        final Editable text = this.binding.textinput.getText();
 727        final String body = text == null ? "" : text.toString();
 728        final Conversation conversation = this.conversation;
 729        if (body.length() == 0 || conversation == null) {
 730            return;
 731        }
 732        if (conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL && trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 733            return;
 734        }
 735        final Message message;
 736        if (conversation.getCorrectingMessage() == null) {
 737            message = new Message(conversation, body, conversation.getNextEncryption());
 738            if (conversation.getMode() == Conversation.MODE_MULTI) {
 739                final Jid nextCounterpart = conversation.getNextCounterpart();
 740                if (nextCounterpart != null) {
 741                    message.setCounterpart(nextCounterpart);
 742                    message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 743                    message.setType(Message.TYPE_PRIVATE);
 744                }
 745            }
 746        } else {
 747            message = conversation.getCorrectingMessage();
 748            message.setBody(body);
 749            message.setEdited(message.getUuid());
 750            message.setUuid(UUID.randomUUID().toString());
 751        }
 752        switch (conversation.getNextEncryption()) {
 753            case Message.ENCRYPTION_PGP:
 754                sendPgpMessage(message);
 755                break;
 756            default:
 757                sendMessage(message);
 758        }
 759    }
 760
 761    protected boolean trustKeysIfNeeded(int requestCode) {
 762        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 763        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 764        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 765        boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 766        boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 767        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 768        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 769        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 770        if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted || downloadInProgress) {
 771            axolotlService.createSessionsIfNeeded(conversation);
 772            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 773            String[] contacts = new String[targets.size()];
 774            for (int i = 0; i < contacts.length; ++i) {
 775                contacts[i] = targets.get(i).toString();
 776            }
 777            intent.putExtra("contacts", contacts);
 778            intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 779            intent.putExtra("conversation", conversation.getUuid());
 780            startActivityForResult(intent, requestCode);
 781            return true;
 782        } else {
 783            return false;
 784        }
 785    }
 786
 787    public void updateChatMsgHint() {
 788        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 789        if (conversation.getCorrectingMessage() != null) {
 790            this.binding.textinput.setHint(R.string.send_corrected_message);
 791        } else if (multi && conversation.getNextCounterpart() != null) {
 792            this.binding.textinput.setHint(getString(
 793                    R.string.send_private_message_to,
 794                    conversation.getNextCounterpart().getResource()));
 795        } else if (multi && !conversation.getMucOptions().participating()) {
 796            this.binding.textinput.setHint(R.string.you_are_not_participating);
 797        } else {
 798            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 799            getActivity().invalidateOptionsMenu();
 800        }
 801    }
 802
 803    public void setupIme() {
 804        this.binding.textinput.refreshIme();
 805    }
 806
 807    private void handleActivityResult(ActivityResult activityResult) {
 808        if (activityResult.resultCode == Activity.RESULT_OK) {
 809            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 810        } else {
 811            handleNegativeActivityResult(activityResult.requestCode);
 812        }
 813    }
 814
 815    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 816        switch (requestCode) {
 817            case REQUEST_TRUST_KEYS_TEXT:
 818                sendMessage();
 819                break;
 820            case REQUEST_TRUST_KEYS_ATTACHMENTS:
 821                commitAttachments();
 822                break;
 823            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 824                final List<Attachment> imageUris = Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 825                mediaPreviewAdapter.addMediaPreviews(imageUris);
 826                toggleInputMethod();
 827                break;
 828            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 829                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 830                if (takePhotoUri != null) {
 831                    mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
 832                    toggleInputMethod();
 833                } else {
 834                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 835                }
 836                break;
 837            case ATTACHMENT_CHOICE_CHOOSE_FILE:
 838            case ATTACHMENT_CHOICE_RECORD_VIDEO:
 839            case ATTACHMENT_CHOICE_RECORD_VOICE:
 840                final Attachment.Type type = requestCode == ATTACHMENT_CHOICE_RECORD_VOICE ? Attachment.Type.RECORDING : Attachment.Type.FILE;
 841                final List<Attachment> fileUris = Attachment.extractAttachments(getActivity(), data, type);
 842                mediaPreviewAdapter.addMediaPreviews(fileUris);
 843                toggleInputMethod();
 844                break;
 845            case ATTACHMENT_CHOICE_LOCATION:
 846                double latitude = data.getDoubleExtra("latitude", 0);
 847                double longitude = data.getDoubleExtra("longitude", 0);
 848                Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 849                mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
 850                toggleInputMethod();
 851                break;
 852            case REQUEST_INVITE_TO_CONVERSATION:
 853                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
 854                if (invite != null) {
 855                    if (invite.execute(activity)) {
 856                        activity.mToast = Toast.makeText(activity, R.string.creating_conference, Toast.LENGTH_LONG);
 857                        activity.mToast.show();
 858                    }
 859                }
 860                break;
 861        }
 862    }
 863
 864    private void commitAttachments() {
 865        if (!hasPermissions(REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 866            return;
 867        }
 868        if (conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL && trustKeysIfNeeded(REQUEST_TRUST_KEYS_ATTACHMENTS)) {
 869            return;
 870        }
 871        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
 872        final PresenceSelector.OnPresenceSelected callback = () -> {
 873            for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
 874                final Attachment attachment = i.next();
 875                if (attachment.getType() == Attachment.Type.LOCATION) {
 876                    attachLocationToConversation(conversation, attachment.getUri());
 877                } else if (attachment.getType() == Attachment.Type.IMAGE) {
 878                    Log.d(Config.LOGTAG, "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
 879                    attachImageToConversation(conversation, attachment.getUri());
 880                } else {
 881                    Log.d(Config.LOGTAG, "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 882                    attachFileToConversation(conversation, attachment.getUri(), attachment.getMime());
 883                }
 884            }
 885            mediaPreviewAdapter.notifyDataSetChanged();
 886            toggleInputMethod();
 887        };
 888        if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), attachments, getMaxHttpUploadSize(conversation))) {
 889            callback.onPresenceSelected();
 890        } else {
 891            activity.selectPresence(conversation, callback);
 892        }
 893    }
 894
 895    public void toggleInputMethod() {
 896        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
 897        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
 898        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
 899        updateSendButton();
 900    }
 901
 902    private void handleNegativeActivityResult(int requestCode) {
 903        switch (requestCode) {
 904            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 905                if (pendingTakePhotoUri.clear()) {
 906                    Log.d(Config.LOGTAG, "cleared pending photo uri after negative activity result");
 907                }
 908                break;
 909        }
 910    }
 911
 912    @Override
 913    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 914        super.onActivityResult(requestCode, resultCode, data);
 915        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 916        if (activity != null && activity.xmppConnectionService != null) {
 917            handleActivityResult(activityResult);
 918        } else {
 919            this.postponedActivityResult.push(activityResult);
 920        }
 921    }
 922
 923    public void unblockConversation(final Blockable conversation) {
 924        activity.xmppConnectionService.sendUnblockRequest(conversation);
 925    }
 926
 927    @Override
 928    public void onAttach(Activity activity) {
 929        super.onAttach(activity);
 930        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 931        if (activity instanceof ConversationsActivity) {
 932            this.activity = (ConversationsActivity) activity;
 933        } else {
 934            throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationsActivity");
 935        }
 936    }
 937
 938    @Override
 939    public void onDetach() {
 940        super.onDetach();
 941        this.activity = null; //TODO maybe not a good idea since some callbacks really need it
 942    }
 943
 944    @Override
 945    public void onCreate(Bundle savedInstanceState) {
 946        super.onCreate(savedInstanceState);
 947        setHasOptionsMenu(true);
 948    }
 949
 950    @Override
 951    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 952        menuInflater.inflate(R.menu.fragment_conversation, menu);
 953        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 954        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 955        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 956        final MenuItem menuMute = menu.findItem(R.id.action_mute);
 957        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 958
 959
 960        if (conversation != null) {
 961            if (conversation.getMode() == Conversation.MODE_MULTI) {
 962                menuContactDetails.setVisible(false);
 963                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 964            } else {
 965                menuContactDetails.setVisible(!this.conversation.withSelf());
 966                menuMucDetails.setVisible(false);
 967                final XmppConnectionService service = activity.xmppConnectionService;
 968                menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 969            }
 970            if (conversation.isMuted()) {
 971                menuMute.setVisible(false);
 972            } else {
 973                menuUnmute.setVisible(false);
 974            }
 975            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 976            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 977        }
 978        super.onCreateOptionsMenu(menu, menuInflater);
 979    }
 980
 981    @Override
 982    public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 983        this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 984        binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 985
 986        binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 987
 988        binding.textinput.setOnEditorActionListener(mEditorActionListener);
 989        binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 990
 991        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 992
 993        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
 994        binding.messagesView.setOnScrollListener(mOnScrollListener);
 995        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 996        mediaPreviewAdapter = new MediaPreviewAdapter(this);
 997        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
 998        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 999        messageListAdapter.setOnContactPictureClicked(message -> {
1000            String fingerprint;
1001            if (message.getEncryption() == Message.ENCRYPTION_PGP || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
1002                fingerprint = "pgp";
1003            } else {
1004                fingerprint = message.getFingerprint();
1005            }
1006            final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
1007            if (received) {
1008                if (message.getConversation() instanceof Conversation && message.getConversation().getMode() == Conversation.MODE_MULTI) {
1009                    Jid tcp = message.getTrueCounterpart();
1010                    Jid user = message.getCounterpart();
1011                    if (user != null && !user.isBareJid()) {
1012                        final MucOptions mucOptions = ((Conversation) message.getConversation()).getMucOptions();
1013                        if (mucOptions.participating() || ((Conversation) message.getConversation()).getNextCounterpart() != null) {
1014                            if (!mucOptions.isUserInRoom(user) && mucOptions.findUserByRealJid(tcp == null ? null : tcp.asBareJid()) == null) {
1015                                Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResource()), Toast.LENGTH_SHORT).show();
1016                            }
1017                            highlightInConference(user.getResource());
1018                        } else {
1019                            Toast.makeText(getActivity(), R.string.you_are_not_participating, Toast.LENGTH_SHORT).show();
1020                        }
1021                    }
1022                    return;
1023                } else {
1024                    if (!message.getContact().isSelf()) {
1025                        activity.switchToContactDetails(message.getContact(), fingerprint);
1026                        return;
1027                    }
1028                }
1029            }
1030            activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
1031        });
1032        messageListAdapter.setOnContactPictureLongClicked((v, message) -> {
1033            if (message.getStatus() <= Message.STATUS_RECEIVED) {
1034                if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
1035                    Jid tcp = message.getTrueCounterpart();
1036                    Jid cp = message.getCounterpart();
1037                    if (cp != null && !cp.isBareJid()) {
1038                        User userByRealJid = tcp != null ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp) : null;
1039                        final User user = userByRealJid != null ? userByRealJid : conversation.getMucOptions().findUserByFullJid(cp);
1040                        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
1041                        popupMenu.inflate(R.menu.muc_details_context);
1042                        final Menu menu = popupMenu.getMenu();
1043                        MucDetailsContextMenuHelper.configureMucDetailsContextMenu(activity, menu, conversation, user);
1044                        popupMenu.setOnMenuItemClickListener(menuItem -> MucDetailsContextMenuHelper.onContextItemSelected(menuItem, user, conversation, activity));
1045                        popupMenu.show();
1046                    }
1047                }
1048            } else {
1049                activity.showQrCode(conversation.getAccount().getShareableUri());
1050            }
1051        });
1052        messageListAdapter.setOnQuoteListener(this::quoteText);
1053        binding.messagesView.setAdapter(messageListAdapter);
1054
1055        registerForContextMenu(binding.messagesView);
1056
1057        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1058            this.binding.textinput.setCustomInsertionActionModeCallback(new EditMessageActionModeCallback(this.binding.textinput));
1059        }
1060
1061        return binding.getRoot();
1062    }
1063
1064    private void quoteText(String text) {
1065        if (binding.textinput.isEnabled()) {
1066            binding.textinput.insertAsQuote(text);
1067            binding.textinput.requestFocus();
1068            InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1069            if (inputMethodManager != null) {
1070                inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1071            }
1072        }
1073    }
1074
1075    private void quoteMessage(Message message) {
1076        quoteText(MessageUtils.prepareQuote(message));
1077    }
1078
1079    @Override
1080    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1081        synchronized (this.messageList) {
1082            super.onCreateContextMenu(menu, v, menuInfo);
1083            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1084            this.selectedMessage = this.messageList.get(acmi.position);
1085            populateContextMenu(menu);
1086        }
1087    }
1088
1089    private void populateContextMenu(ContextMenu menu) {
1090        final Message m = this.selectedMessage;
1091        final Transferable t = m.getTransferable();
1092        Message relevantForCorrection = m;
1093        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1094            relevantForCorrection = relevantForCorrection.next();
1095        }
1096        if (m.getType() != Message.TYPE_STATUS) {
1097
1098            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
1099                return;
1100            }
1101
1102            final boolean deleted = t != null && t instanceof TransferablePlaceholder;
1103            final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1104                    || m.getEncryption() == Message.ENCRYPTION_PGP;
1105            final boolean receiving = m.getStatus() == Message.STATUS_RECEIVED && (t instanceof JingleConnection || t instanceof HttpDownloadConnection);
1106            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1107            menu.setHeaderTitle(R.string.message_options);
1108            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1109            MenuItem copyLink = menu.findItem(R.id.copy_link);
1110            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1111            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1112            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1113            MenuItem shareWith = menu.findItem(R.id.share_with);
1114            MenuItem sendAgain = menu.findItem(R.id.send_again);
1115            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1116            MenuItem downloadFile = menu.findItem(R.id.download_file);
1117            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1118            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1119            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1120            final boolean showError = m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1121            if (!m.isFileOrImage() && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
1122                copyMessage.setVisible(true);
1123                quoteMessage.setVisible(!showError && MessageUtils.prepareQuote(m).length() > 0);
1124                String body = m.getMergedBody().toString();
1125                if (ShareUtil.containsXmppUri(body)) {
1126                    copyLink.setTitle(R.string.copy_jabber_id);
1127                    copyLink.setVisible(true);
1128                } else if (Patterns.AUTOLINK_WEB_URL.matcher(body).find()) {
1129                    copyLink.setVisible(true);
1130                }
1131            }
1132            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
1133                retryDecryption.setVisible(true);
1134            }
1135            if (!showError
1136                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1137                    && relevantForCorrection.isLastCorrectableMessage()
1138                    && m.getConversation() instanceof Conversation
1139                    && (((Conversation) m.getConversation()).getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
1140                correctMessage.setVisible(true);
1141            }
1142            if ((m.isFileOrImage() && !deleted && !receiving) || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
1143                shareWith.setVisible(true);
1144            }
1145            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1146                sendAgain.setVisible(true);
1147            }
1148            if (m.hasFileOnRemoteHost()
1149                    || m.isGeoUri()
1150                    || m.treatAsDownloadable()
1151                    || t instanceof HttpDownloadConnection) {
1152                copyUrl.setVisible(true);
1153            }
1154            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1155                downloadFile.setVisible(true);
1156                downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
1157            }
1158            final boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
1159                    || m.getStatus() == Message.STATUS_UNSEND
1160                    || m.getStatus() == Message.STATUS_OFFERED;
1161            final boolean cancelable = (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1162            if (cancelable) {
1163                cancelTransmission.setVisible(true);
1164            }
1165            if (m.isFileOrImage() && !deleted && !cancelable) {
1166                String path = m.getRelativeFilePath();
1167                if (path == null || !path.startsWith("/") || FileBackend.isInDirectoryThatShouldNotBeScanned(getActivity(), path)) {
1168                    deleteFile.setVisible(true);
1169                    deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
1170                }
1171            }
1172            if (showError) {
1173                showErrorMessage.setVisible(true);
1174            }
1175        }
1176    }
1177
1178    @Override
1179    public boolean onContextItemSelected(MenuItem item) {
1180        switch (item.getItemId()) {
1181            case R.id.share_with:
1182                ShareUtil.share(activity, selectedMessage);
1183                return true;
1184            case R.id.correct_message:
1185                correctMessage(selectedMessage);
1186                return true;
1187            case R.id.copy_message:
1188                ShareUtil.copyToClipboard(activity, selectedMessage);
1189                return true;
1190            case R.id.copy_link:
1191                ShareUtil.copyLinkToClipboard(activity, selectedMessage);
1192                return true;
1193            case R.id.quote_message:
1194                quoteMessage(selectedMessage);
1195                return true;
1196            case R.id.send_again:
1197                resendMessage(selectedMessage);
1198                return true;
1199            case R.id.copy_url:
1200                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1201                return true;
1202            case R.id.download_file:
1203                startDownloadable(selectedMessage);
1204                return true;
1205            case R.id.cancel_transmission:
1206                cancelTransmission(selectedMessage);
1207                return true;
1208            case R.id.retry_decryption:
1209                retryDecryption(selectedMessage);
1210                return true;
1211            case R.id.delete_file:
1212                deleteFile(selectedMessage);
1213                return true;
1214            case R.id.show_error_message:
1215                showErrorMessage(selectedMessage);
1216                return true;
1217            default:
1218                return super.onContextItemSelected(item);
1219        }
1220    }
1221
1222    @Override
1223    public boolean onOptionsItemSelected(final MenuItem item) {
1224        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1225            return false;
1226        } else if (conversation == null) {
1227            return super.onOptionsItemSelected(item);
1228        }
1229        switch (item.getItemId()) {
1230            case R.id.encryption_choice_axolotl:
1231            case R.id.encryption_choice_pgp:
1232            case R.id.encryption_choice_none:
1233                handleEncryptionSelection(item);
1234                break;
1235            case R.id.attach_choose_picture:
1236            case R.id.attach_take_picture:
1237            case R.id.attach_record_video:
1238            case R.id.attach_choose_file:
1239            case R.id.attach_record_voice:
1240            case R.id.attach_location:
1241                handleAttachmentSelection(item);
1242                break;
1243            case R.id.action_archive:
1244                activity.xmppConnectionService.archiveConversation(conversation);
1245                break;
1246            case R.id.action_contact_details:
1247                activity.switchToContactDetails(conversation.getContact());
1248                break;
1249            case R.id.action_muc_details:
1250                Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1251                intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1252                intent.putExtra("uuid", conversation.getUuid());
1253                startActivity(intent);
1254                break;
1255            case R.id.action_invite:
1256                startActivityForResult(ChooseContactActivity.create(activity, conversation), REQUEST_INVITE_TO_CONVERSATION);
1257                break;
1258            case R.id.action_clear_history:
1259                clearHistoryDialog(conversation);
1260                break;
1261            case R.id.action_mute:
1262                muteConversationDialog(conversation);
1263                break;
1264            case R.id.action_unmute:
1265                unmuteConversation(conversation);
1266                break;
1267            case R.id.action_block:
1268            case R.id.action_unblock:
1269                final Activity activity = getActivity();
1270                if (activity instanceof XmppActivity) {
1271                    BlockContactDialog.show((XmppActivity) activity, conversation);
1272                }
1273                break;
1274            default:
1275                break;
1276        }
1277        return super.onOptionsItemSelected(item);
1278    }
1279
1280    private void handleAttachmentSelection(MenuItem item) {
1281        switch (item.getItemId()) {
1282            case R.id.attach_choose_picture:
1283                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1284                break;
1285            case R.id.attach_take_picture:
1286                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1287                break;
1288            case R.id.attach_record_video:
1289                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1290                break;
1291            case R.id.attach_choose_file:
1292                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1293                break;
1294            case R.id.attach_record_voice:
1295                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1296                break;
1297            case R.id.attach_location:
1298                attachFile(ATTACHMENT_CHOICE_LOCATION);
1299                break;
1300        }
1301    }
1302
1303    private void handleEncryptionSelection(MenuItem item) {
1304        if (conversation == null) {
1305            return;
1306        }
1307        switch (item.getItemId()) {
1308            case R.id.encryption_choice_none:
1309                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1310                item.setChecked(true);
1311                break;
1312            case R.id.encryption_choice_pgp:
1313                if (activity.hasPgp()) {
1314                    if (conversation.getAccount().getPgpSignature() != null) {
1315                        conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1316                        item.setChecked(true);
1317                    } else {
1318                        activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1319                    }
1320                } else {
1321                    activity.showInstallPgpDialog();
1322                }
1323                break;
1324            case R.id.encryption_choice_axolotl:
1325                Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1326                        + "Enabled axolotl for Contact " + conversation.getContact().getJid());
1327                conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1328                item.setChecked(true);
1329                break;
1330            default:
1331                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1332                break;
1333        }
1334        activity.xmppConnectionService.updateConversation(conversation);
1335        updateChatMsgHint();
1336        getActivity().invalidateOptionsMenu();
1337        activity.refreshUi();
1338    }
1339
1340    public void attachFile(final int attachmentChoice) {
1341        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1342            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO)) {
1343                return;
1344            }
1345        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1346            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA)) {
1347                return;
1348            }
1349        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1350            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1351                return;
1352            }
1353        }
1354        try {
1355            activity.getPreferences().edit()
1356                    .putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1357                    .apply();
1358        } catch (IllegalArgumentException e) {
1359            //just do not save
1360        }
1361        final int encryption = conversation.getNextEncryption();
1362        final int mode = conversation.getMode();
1363        if (encryption == Message.ENCRYPTION_PGP) {
1364            if (activity.hasPgp()) {
1365                if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1366                    activity.xmppConnectionService.getPgpEngine().hasKey(
1367                            conversation.getContact(),
1368                            new UiCallback<Contact>() {
1369
1370                                @Override
1371                                public void userInputRequried(PendingIntent pi, Contact contact) {
1372                                    startPendingIntent(pi, attachmentChoice);
1373                                }
1374
1375                                @Override
1376                                public void success(Contact contact) {
1377                                    selectPresenceToAttachFile(attachmentChoice);
1378                                }
1379
1380                                @Override
1381                                public void error(int error, Contact contact) {
1382                                    activity.replaceToast(getString(error));
1383                                }
1384                            });
1385                } else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1386                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1387                        Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1388                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1389                        warning.show();
1390                    }
1391                    selectPresenceToAttachFile(attachmentChoice);
1392                } else {
1393                    showNoPGPKeyDialog(false, (dialog, which) -> {
1394                        conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1395                        activity.xmppConnectionService.updateConversation(conversation);
1396                        selectPresenceToAttachFile(attachmentChoice);
1397                    });
1398                }
1399            } else {
1400                activity.showInstallPgpDialog();
1401            }
1402        } else {
1403            selectPresenceToAttachFile(attachmentChoice);
1404        }
1405    }
1406
1407    @Override
1408    public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
1409        if (grantResults.length > 0) {
1410            if (allGranted(grantResults)) {
1411                switch (requestCode) {
1412                    case REQUEST_START_DOWNLOAD:
1413                        if (this.mPendingDownloadableMessage != null) {
1414                            startDownloadable(this.mPendingDownloadableMessage);
1415                        }
1416                        break;
1417                    case REQUEST_ADD_EDITOR_CONTENT:
1418                        if (this.mPendingEditorContent != null) {
1419                            attachEditorContentToConversation(this.mPendingEditorContent);
1420                        }
1421                        break;
1422                    case REQUEST_COMMIT_ATTACHMENTS:
1423                        commitAttachments();
1424                        break;
1425                    default:
1426                        attachFile(requestCode);
1427                        break;
1428                }
1429            } else {
1430                @StringRes int res;
1431                String firstDenied = getFirstDenied(grantResults, permissions);
1432                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1433                    res = R.string.no_microphone_permission;
1434                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1435                    res = R.string.no_camera_permission;
1436                } else {
1437                    res = R.string.no_storage_permission;
1438                }
1439                Toast.makeText(getActivity(), res, Toast.LENGTH_SHORT).show();
1440            }
1441        }
1442        if (writeGranted(grantResults, permissions)) {
1443            if (activity != null && activity.xmppConnectionService != null) {
1444                activity.xmppConnectionService.restartFileObserver();
1445            }
1446            refresh();
1447        }
1448    }
1449
1450    public void startDownloadable(Message message) {
1451        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1452            this.mPendingDownloadableMessage = message;
1453            return;
1454        }
1455        Transferable transferable = message.getTransferable();
1456        if (transferable != null) {
1457            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1458                createNewConnection(message);
1459                return;
1460            }
1461            if (!transferable.start()) {
1462                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1463                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1464            }
1465        } else if (message.treatAsDownloadable()) {
1466            createNewConnection(message);
1467        }
1468    }
1469
1470    private void createNewConnection(final Message message) {
1471        if (!activity.xmppConnectionService.getHttpConnectionManager().checkConnection(message)) {
1472            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1473            return;
1474        }
1475        activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1476    }
1477
1478    @SuppressLint("InflateParams")
1479    protected void clearHistoryDialog(final Conversation conversation) {
1480        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1481        builder.setTitle(getString(R.string.clear_conversation_history));
1482        final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1483        final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1484        builder.setView(dialogView);
1485        builder.setNegativeButton(getString(R.string.cancel), null);
1486        builder.setPositiveButton(getString(R.string.confirm), (dialog, which) -> {
1487            this.activity.xmppConnectionService.clearConversationHistory(conversation);
1488            if (endConversationCheckBox.isChecked()) {
1489                this.activity.xmppConnectionService.archiveConversation(conversation);
1490                this.activity.onConversationArchived(conversation);
1491            } else {
1492                activity.onConversationsListItemUpdated();
1493                refresh();
1494            }
1495        });
1496        builder.create().show();
1497    }
1498
1499    protected void muteConversationDialog(final Conversation conversation) {
1500        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1501        builder.setTitle(R.string.disable_notifications);
1502        final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1503        final CharSequence[] labels = new CharSequence[durations.length];
1504        for (int i = 0; i < durations.length; ++i) {
1505            if (durations[i] == -1) {
1506                labels[i] = getString(R.string.until_further_notice);
1507            } else {
1508                labels[i] = TimeframeUtils.resolve(activity, 1000L * durations[i]);
1509            }
1510        }
1511        builder.setItems(labels, (dialog, which) -> {
1512            final long till;
1513            if (durations[which] == -1) {
1514                till = Long.MAX_VALUE;
1515            } else {
1516                till = System.currentTimeMillis() + (durations[which] * 1000);
1517            }
1518            conversation.setMutedTill(till);
1519            activity.xmppConnectionService.updateConversation(conversation);
1520            activity.onConversationsListItemUpdated();
1521            refresh();
1522            getActivity().invalidateOptionsMenu();
1523        });
1524        builder.create().show();
1525    }
1526
1527    private boolean hasPermissions(int requestCode, String... permissions) {
1528        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1529            final List<String> missingPermissions = new ArrayList<>();
1530            for (String permission : permissions) {
1531                if (Config.ONLY_INTERNAL_STORAGE && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1532                    continue;
1533                }
1534                if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
1535                    missingPermissions.add(permission);
1536                }
1537            }
1538            if (missingPermissions.size() == 0) {
1539                return true;
1540            } else {
1541                requestPermissions(missingPermissions.toArray(new String[missingPermissions.size()]), requestCode);
1542                return false;
1543            }
1544        } else {
1545            return true;
1546        }
1547    }
1548
1549    public void unmuteConversation(final Conversation conversation) {
1550        conversation.setMutedTill(0);
1551        this.activity.xmppConnectionService.updateConversation(conversation);
1552        this.activity.onConversationsListItemUpdated();
1553        refresh();
1554        getActivity().invalidateOptionsMenu();
1555    }
1556
1557    protected void selectPresenceToAttachFile(final int attachmentChoice) {
1558        final Account account = conversation.getAccount();
1559        final PresenceSelector.OnPresenceSelected callback = () -> {
1560            Intent intent = new Intent();
1561            boolean chooser = false;
1562            switch (attachmentChoice) {
1563                case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1564                    intent.setAction(Intent.ACTION_GET_CONTENT);
1565                    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1566                    intent.setType("image/*");
1567                    chooser = true;
1568                    break;
1569                case ATTACHMENT_CHOICE_RECORD_VIDEO:
1570                    intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1571                    break;
1572                case ATTACHMENT_CHOICE_TAKE_PHOTO:
1573                    final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1574                    pendingTakePhotoUri.push(uri);
1575                    intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1576                    intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1577                    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1578                    intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1579                    break;
1580                case ATTACHMENT_CHOICE_CHOOSE_FILE:
1581                    chooser = true;
1582                    intent.setType("*/*");
1583                    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1584                    intent.addCategory(Intent.CATEGORY_OPENABLE);
1585                    intent.setAction(Intent.ACTION_GET_CONTENT);
1586                    break;
1587                case ATTACHMENT_CHOICE_RECORD_VOICE:
1588                    intent = new Intent(getActivity(), RecordingActivity.class);
1589                    break;
1590                case ATTACHMENT_CHOICE_LOCATION:
1591                    intent = GeoHelper.getFetchIntent(activity);
1592                    break;
1593            }
1594            if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1595                if (chooser) {
1596                    startActivityForResult(
1597                            Intent.createChooser(intent, getString(R.string.perform_action_with)),
1598                            attachmentChoice);
1599                } else {
1600                    startActivityForResult(intent, attachmentChoice);
1601                }
1602            }
1603        };
1604        if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1605            conversation.setNextCounterpart(null);
1606            callback.onPresenceSelected();
1607        } else {
1608            activity.selectPresence(conversation, callback);
1609        }
1610    }
1611
1612    @Override
1613    public void onResume() {
1614        super.onResume();
1615        binding.messagesView.post(this::fireReadEvent);
1616    }
1617
1618    private void fireReadEvent() {
1619        if (activity != null && this.conversation != null) {
1620            String uuid = getLastVisibleMessageUuid();
1621            if (uuid != null) {
1622                activity.onConversationRead(this.conversation, uuid);
1623            }
1624        }
1625    }
1626
1627    private String getLastVisibleMessageUuid() {
1628        if (binding == null) {
1629            return null;
1630        }
1631        synchronized (this.messageList) {
1632            int pos = binding.messagesView.getLastVisiblePosition();
1633            if (pos >= 0) {
1634                Message message = null;
1635                for (int i = pos; i >= 0; --i) {
1636                    try {
1637                        message = (Message) binding.messagesView.getItemAtPosition(i);
1638                    } catch (IndexOutOfBoundsException e) {
1639                        //should not happen if we synchronize properly. however if that fails we just gonna try item -1
1640                        continue;
1641                    }
1642                    if (message.getType() != Message.TYPE_STATUS) {
1643                        break;
1644                    }
1645                }
1646                if (message != null) {
1647                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
1648                        message = message.next();
1649                    }
1650                    return message.getUuid();
1651                }
1652            }
1653        }
1654        return null;
1655    }
1656
1657    private void showErrorMessage(final Message message) {
1658        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1659        builder.setTitle(R.string.error_message);
1660        builder.setMessage(message.getErrorMessage());
1661        builder.setNegativeButton(R.string.copy_to_clipboard, (dialog, which) -> {
1662            activity.copyTextToClipboard(message.getErrorMessage(),R.string.error_message);
1663            Toast.makeText(activity,R.string.error_message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1664        });
1665        builder.setPositiveButton(R.string.confirm, null);
1666        builder.create().show();
1667    }
1668
1669
1670    private void deleteFile(final Message message) {
1671        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1672        builder.setNegativeButton(R.string.cancel, null);
1673        builder.setTitle(R.string.delete_file_dialog);
1674        builder.setMessage(R.string.delete_file_dialog_msg);
1675        builder.setPositiveButton(R.string.confirm, (dialog, which) -> {
1676            if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1677                message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1678                activity.onConversationsListItemUpdated();
1679                refresh();
1680            }
1681        });
1682        builder.create().show();
1683
1684    }
1685
1686    private void resendMessage(final Message message) {
1687        if (message.isFileOrImage()) {
1688            if (!(message.getConversation() instanceof Conversation)) {
1689                return;
1690            }
1691            final Conversation conversation = (Conversation) message.getConversation();
1692            DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1693            if (file.exists()) {
1694                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1695                if (!message.hasFileOnRemoteHost()
1696                        && xmppConnection != null
1697                        && conversation.getMode() == Conversational.MODE_SINGLE
1698                        && !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1699                    activity.selectPresence(conversation, () -> {
1700                        message.setCounterpart(conversation.getNextCounterpart());
1701                        activity.xmppConnectionService.resendFailedMessages(message);
1702                        new Handler().post(() -> {
1703                            int size = messageList.size();
1704                            this.binding.messagesView.setSelection(size - 1);
1705                        });
1706                    });
1707                    return;
1708                }
1709            } else {
1710                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1711                message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1712                activity.onConversationsListItemUpdated();
1713                refresh();
1714                return;
1715            }
1716        }
1717        activity.xmppConnectionService.resendFailedMessages(message);
1718        new Handler().post(() -> {
1719            int size = messageList.size();
1720            this.binding.messagesView.setSelection(size - 1);
1721        });
1722    }
1723
1724    private void cancelTransmission(Message message) {
1725        Transferable transferable = message.getTransferable();
1726        if (transferable != null) {
1727            transferable.cancel();
1728        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
1729            activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
1730        }
1731    }
1732
1733    private void retryDecryption(Message message) {
1734        message.setEncryption(Message.ENCRYPTION_PGP);
1735        activity.onConversationsListItemUpdated();
1736        refresh();
1737        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1738    }
1739
1740    public void privateMessageWith(final Jid counterpart) {
1741        if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1742            activity.xmppConnectionService.sendChatState(conversation);
1743        }
1744        this.binding.textinput.setText("");
1745        this.conversation.setNextCounterpart(counterpart);
1746        updateChatMsgHint();
1747        updateSendButton();
1748        updateEditablity();
1749    }
1750
1751    private void correctMessage(Message message) {
1752        while (message.mergeable(message.next())) {
1753            message = message.next();
1754        }
1755        this.conversation.setCorrectingMessage(message);
1756        final Editable editable = binding.textinput.getText();
1757        this.conversation.setDraftMessage(editable.toString());
1758        this.binding.textinput.setText("");
1759        this.binding.textinput.append(message.getBody());
1760
1761    }
1762
1763    private void highlightInConference(String nick) {
1764        final Editable editable = this.binding.textinput.getText();
1765        String oldString = editable.toString().trim();
1766        final int pos = this.binding.textinput.getSelectionStart();
1767        if (oldString.isEmpty() || pos == 0) {
1768            editable.insert(0, nick + ": ");
1769        } else {
1770            final char before = editable.charAt(pos - 1);
1771            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1772            if (before == '\n') {
1773                editable.insert(pos, nick + ": ");
1774            } else {
1775                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1776                    if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1777                        editable.insert(pos - 2, ", " + nick);
1778                        return;
1779                    }
1780                }
1781                editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1782                if (Character.isWhitespace(after)) {
1783                    this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1784                }
1785            }
1786        }
1787    }
1788
1789    @Override
1790    public void startActivityForResult(Intent intent, int requestCode) {
1791        final Activity activity = getActivity();
1792        if (activity instanceof ConversationsActivity) {
1793            ((ConversationsActivity) activity).clearPendingViewIntent();
1794        }
1795        super.startActivityForResult(intent, requestCode);
1796    }
1797
1798    @Override
1799    public void onSaveInstanceState(Bundle outState) {
1800        super.onSaveInstanceState(outState);
1801        if (conversation != null) {
1802            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1803            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
1804            final Uri uri = pendingTakePhotoUri.peek();
1805            if (uri != null) {
1806                outState.putString(STATE_PHOTO_URI, uri.toString());
1807            }
1808            final ScrollState scrollState = getScrollPosition();
1809            if (scrollState != null) {
1810                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
1811            }
1812            final ArrayList<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1813            if (attachments.size() > 0) {
1814                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
1815            }
1816        }
1817    }
1818
1819    @Override
1820    public void onActivityCreated(Bundle savedInstanceState) {
1821        super.onActivityCreated(savedInstanceState);
1822        if (savedInstanceState == null) {
1823            return;
1824        }
1825        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1826        ArrayList<Attachment> attachments = savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
1827        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
1828        if (uuid != null) {
1829            QuickLoader.set(uuid);
1830            this.pendingConversationsUuid.push(uuid);
1831            if (attachments != null && attachments.size() > 0) {
1832                this.pendingMediaPreviews.push(attachments);
1833            }
1834            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
1835            if (takePhotoUri != null) {
1836                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
1837            }
1838            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
1839        }
1840    }
1841
1842    @Override
1843    public void onStart() {
1844        super.onStart();
1845        if (this.reInitRequiredOnStart && this.conversation != null) {
1846            final Bundle extras = pendingExtras.pop();
1847            reInit(this.conversation, extras != null);
1848            if (extras != null) {
1849                processExtras(extras);
1850            }
1851        } else if (conversation == null && activity != null && activity.xmppConnectionService != null) {
1852            final String uuid = pendingConversationsUuid.pop();
1853            Log.d(Config.LOGTAG, "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid=" + uuid);
1854            if (uuid != null) {
1855                findAndReInitByUuidOrArchive(uuid);
1856            }
1857        }
1858    }
1859
1860    @Override
1861    public void onStop() {
1862        super.onStop();
1863        final Activity activity = getActivity();
1864        messageListAdapter.unregisterListenerInAudioPlayer();
1865        if (activity == null || !activity.isChangingConfigurations()) {
1866            hideSoftKeyboard(activity);
1867            messageListAdapter.stopAudioPlayer();
1868        }
1869        if (this.conversation != null) {
1870            final String msg = this.binding.textinput.getText().toString();
1871            storeNextMessage(msg);
1872            updateChatState(this.conversation, msg);
1873            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1874        }
1875        this.reInitRequiredOnStart = true;
1876    }
1877
1878    private void updateChatState(final Conversation conversation, final String msg) {
1879        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1880        Account.State status = conversation.getAccount().getStatus();
1881        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1882            activity.xmppConnectionService.sendChatState(conversation);
1883        }
1884    }
1885
1886    private void saveMessageDraftStopAudioPlayer() {
1887        final Conversation previousConversation = this.conversation;
1888        if (this.activity == null || this.binding == null || previousConversation == null) {
1889            return;
1890        }
1891        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
1892        final String msg = this.binding.textinput.getText().toString();
1893        storeNextMessage(msg);
1894        updateChatState(this.conversation, msg);
1895        messageListAdapter.stopAudioPlayer();
1896        mediaPreviewAdapter.clearPreviews();
1897        toggleInputMethod();
1898    }
1899
1900    public void reInit(Conversation conversation, Bundle extras) {
1901        QuickLoader.set(conversation.getUuid());
1902        this.saveMessageDraftStopAudioPlayer();
1903        this.clearPending();
1904        if (this.reInit(conversation, extras != null)) {
1905            if (extras != null) {
1906                processExtras(extras);
1907            }
1908            this.reInitRequiredOnStart = false;
1909        } else {
1910            this.reInitRequiredOnStart = true;
1911            pendingExtras.push(extras);
1912        }
1913        resetUnreadMessagesCount();
1914    }
1915
1916    private void reInit(Conversation conversation) {
1917        reInit(conversation, false);
1918    }
1919
1920    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
1921        if (conversation == null) {
1922            return false;
1923        }
1924        this.conversation = conversation;
1925        //once we set the conversation all is good and it will automatically do the right thing in onStart()
1926        if (this.activity == null || this.binding == null) {
1927            return false;
1928        }
1929
1930        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
1931            activity.onConversationArchived(this.conversation);
1932            return false;
1933        }
1934
1935        stopScrolling();
1936        Log.d(Config.LOGTAG, "reInit(hasExtras=" + Boolean.toString(hasExtras) + ")");
1937
1938        if (this.conversation.isRead() && hasExtras) {
1939            Log.d(Config.LOGTAG, "trimming conversation");
1940            this.conversation.trim();
1941        }
1942
1943        setupIme();
1944
1945        final boolean scrolledToBottomAndNoPending = this.scrolledToBottom() && pendingScrollState.peek() == null;
1946
1947        this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1948        this.binding.textinput.setKeyboardListener(null);
1949        this.binding.textinput.setText("");
1950        final boolean participating = conversation.getMode() == Conversational.MODE_SINGLE || conversation.getMucOptions().participating();
1951        if (participating) {
1952            this.binding.textinput.append(this.conversation.getNextMessage());
1953        }
1954        this.binding.textinput.setKeyboardListener(this);
1955        messageListAdapter.updatePreferences();
1956        refresh(false);
1957        this.conversation.messagesLoaded.set(true);
1958        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + Boolean.toString(scrolledToBottomAndNoPending));
1959
1960        if (hasExtras || scrolledToBottomAndNoPending) {
1961            resetUnreadMessagesCount();
1962            synchronized (this.messageList) {
1963                Log.d(Config.LOGTAG, "jump to first unread message");
1964                final Message first = conversation.getFirstUnreadMessage();
1965                final int bottom = Math.max(0, this.messageList.size() - 1);
1966                final int pos;
1967                final boolean jumpToBottom;
1968                if (first == null) {
1969                    pos = bottom;
1970                    jumpToBottom = true;
1971                } else {
1972                    int i = getIndexOf(first.getUuid(), this.messageList);
1973                    pos = i < 0 ? bottom : i;
1974                    jumpToBottom = false;
1975                }
1976                setSelection(pos, jumpToBottom);
1977            }
1978        }
1979
1980
1981        this.binding.messagesView.post(this::fireReadEvent);
1982        //TODO if we only do this when this fragment is running on main it won't *bing* in tablet layout which might be unnecessary since we can *see* it
1983        activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1984        return true;
1985    }
1986
1987    private void resetUnreadMessagesCount() {
1988        lastMessageUuid = null;
1989        hideUnreadMessagesCount();
1990    }
1991
1992    private void hideUnreadMessagesCount() {
1993        if (this.binding == null) {
1994            return;
1995        }
1996        this.binding.scrollToBottomButton.setEnabled(false);
1997        this.binding.scrollToBottomButton.hide();
1998        this.binding.unreadCountCustomView.setVisibility(View.GONE);
1999    }
2000
2001    private void setSelection(int pos, boolean jumpToBottom) {
2002        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2003        this.binding.messagesView.post(() -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2004        this.binding.messagesView.post(this::fireReadEvent);
2005    }
2006
2007
2008    private boolean scrolledToBottom() {
2009        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2010    }
2011
2012    private void processExtras(Bundle extras) {
2013        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2014        final String text = extras.getString(Intent.EXTRA_TEXT);
2015        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2016        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2017        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2018        final boolean doNotAppend = extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2019        final List<Uri> uris = extractUris(extras);
2020        if (uris != null && uris.size() > 0) {
2021            final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2022            mediaPreviewAdapter.addMediaPreviews(Attachment.of(getActivity(), cleanedUris));
2023            toggleInputMethod();
2024            return;
2025        }
2026        if (nick != null) {
2027            if (pm) {
2028                Jid jid = conversation.getJid();
2029                try {
2030                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2031                    privateMessageWith(next);
2032                } catch (final IllegalArgumentException ignored) {
2033                    //do nothing
2034                }
2035            } else {
2036                final MucOptions mucOptions = conversation.getMucOptions();
2037                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2038                    highlightInConference(nick);
2039                }
2040            }
2041        } else {
2042            if (text != null && asQuote) {
2043                quoteText(text);
2044            } else {
2045                appendText(text, doNotAppend);
2046            }
2047        }
2048        final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2049        if (message != null) {
2050            startDownloadable(message);
2051        }
2052    }
2053
2054    private List<Uri> extractUris(Bundle extras) {
2055        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2056        if (uris != null) {
2057            return uris;
2058        }
2059        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2060        if (uri != null) {
2061            return Collections.singletonList(uri);
2062        } else {
2063            return null;
2064        }
2065    }
2066
2067    private List<Uri> cleanUris(List<Uri> uris) {
2068        Iterator<Uri> iterator = uris.iterator();
2069        while (iterator.hasNext()) {
2070            final Uri uri = iterator.next();
2071            if (FileBackend.weOwnFile(getActivity(), uri)) {
2072                iterator.remove();
2073                Toast.makeText(getActivity(), R.string.security_violation_not_attaching_file, Toast.LENGTH_SHORT).show();
2074            }
2075        }
2076        return uris;
2077    }
2078
2079    private boolean showBlockSubmenu(View view) {
2080        final Jid jid = conversation.getJid();
2081        final boolean showReject = !conversation.isWithStranger() && conversation.getContact().getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2082        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2083        popupMenu.inflate(R.menu.block);
2084        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2085        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2086        popupMenu.setOnMenuItemClickListener(menuItem -> {
2087            Blockable blockable;
2088            switch (menuItem.getItemId()) {
2089                case R.id.reject:
2090                    activity.xmppConnectionService.stopPresenceUpdatesTo(conversation.getContact());
2091                    updateSnackBar(conversation);
2092                    return true;
2093                case R.id.block_domain:
2094                    blockable = conversation.getAccount().getRoster().getContact(Jid.ofDomain(jid.getDomain()));
2095                    break;
2096                default:
2097                    blockable = conversation;
2098            }
2099            BlockContactDialog.show(activity, blockable);
2100            return true;
2101        });
2102        popupMenu.show();
2103        return true;
2104    }
2105
2106    private void updateSnackBar(final Conversation conversation) {
2107        final Account account = conversation.getAccount();
2108        final XmppConnection connection = account.getXmppConnection();
2109        final int mode = conversation.getMode();
2110        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2111        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2112            return;
2113        }
2114        if (account.getStatus() == Account.State.DISABLED) {
2115            showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
2116        } else if (conversation.isBlocked()) {
2117            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2118        } else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2119            showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
2120        } else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2121            showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
2122        } else if (mode == Conversation.MODE_MULTI
2123                && !conversation.getMucOptions().online()
2124                && account.getStatus() == Account.State.ONLINE) {
2125            switch (conversation.getMucOptions().getError()) {
2126                case NICK_IN_USE:
2127                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2128                    break;
2129                case NO_RESPONSE:
2130                    showSnackbar(R.string.joining_conference, 0, null);
2131                    break;
2132                case SERVER_NOT_FOUND:
2133                    if (conversation.receivedMessagesCount() > 0) {
2134                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2135                    } else {
2136                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2137                    }
2138                    break;
2139                case REMOTE_SERVER_TIMEOUT:
2140                    if (conversation.receivedMessagesCount() > 0) {
2141                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
2142                    } else {
2143                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
2144                    }
2145                    break;
2146                case PASSWORD_REQUIRED:
2147                    showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
2148                    break;
2149                case BANNED:
2150                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2151                    break;
2152                case MEMBERS_ONLY:
2153                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2154                    break;
2155                case RESOURCE_CONSTRAINT:
2156                    showSnackbar(R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2157                    break;
2158                case KICKED:
2159                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2160                    break;
2161                case UNKNOWN:
2162                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2163                    break;
2164                case INVALID_NICK:
2165                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2166                case SHUTDOWN:
2167                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2168                    break;
2169                case DESTROYED:
2170                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2171                    break;
2172                default:
2173                    hideSnackbar();
2174                    break;
2175            }
2176        } else if (account.hasPendingPgpIntent(conversation)) {
2177            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2178        } else if (connection != null
2179                && connection.getFeatures().blocking()
2180                && conversation.countMessages() != 0
2181                && !conversation.isBlocked()
2182                && conversation.isWithStranger()) {
2183            showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2184        } else {
2185            hideSnackbar();
2186        }
2187    }
2188
2189    @Override
2190    public void refresh() {
2191        if (this.binding == null) {
2192            Log.d(Config.LOGTAG, "ConversationFragment.refresh() skipped updated because view binding was null");
2193            return;
2194        }
2195        if (this.conversation != null && this.activity != null && this.activity.xmppConnectionService != null) {
2196            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2197                activity.onConversationArchived(this.conversation);
2198                return;
2199            }
2200        }
2201        this.refresh(true);
2202    }
2203
2204    private void refresh(boolean notifyConversationRead) {
2205        synchronized (this.messageList) {
2206            if (this.conversation != null) {
2207                conversation.populateWithMessages(this.messageList);
2208                updateSnackBar(conversation);
2209                updateStatusMessages();
2210                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2211                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2212                    binding.unreadCountCustomView.setUnreadCount(conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2213                }
2214                this.messageListAdapter.notifyDataSetChanged();
2215                updateChatMsgHint();
2216                if (notifyConversationRead && activity != null) {
2217                    binding.messagesView.post(this::fireReadEvent);
2218                }
2219                updateSendButton();
2220                updateEditablity();
2221                activity.invalidateOptionsMenu();
2222            }
2223        }
2224    }
2225
2226    protected void messageSent() {
2227        mSendingPgpMessage.set(false);
2228        this.binding.textinput.setText("");
2229        if (conversation.setCorrectingMessage(null)) {
2230            this.binding.textinput.append(conversation.getDraftMessage());
2231            conversation.setDraftMessage(null);
2232        }
2233        storeNextMessage();
2234        updateChatMsgHint();
2235        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2236        final boolean prefScrollToBottom = p.getBoolean("scroll_to_bottom", activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2237        if (prefScrollToBottom || scrolledToBottom()) {
2238            new Handler().post(() -> {
2239                int size = messageList.size();
2240                this.binding.messagesView.setSelection(size - 1);
2241            });
2242        }
2243    }
2244
2245    private boolean storeNextMessage() {
2246        return storeNextMessage(this.binding.textinput.getText().toString());
2247    }
2248
2249    private boolean storeNextMessage(String msg) {
2250        final boolean participating = conversation.getMode() == Conversational.MODE_SINGLE || conversation.getMucOptions().participating();
2251        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED && participating && this.conversation.setNextMessage(msg)) {
2252            this.activity.xmppConnectionService.updateConversation(this.conversation);
2253            return true;
2254        }
2255        return false;
2256    }
2257
2258    public void doneSendingPgpMessage() {
2259        mSendingPgpMessage.set(false);
2260    }
2261
2262    public long getMaxHttpUploadSize(Conversation conversation) {
2263        final XmppConnection connection = conversation.getAccount().getXmppConnection();
2264        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2265    }
2266
2267    private void updateEditablity() {
2268        boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
2269        this.binding.textinput.setFocusable(canWrite);
2270        this.binding.textinput.setFocusableInTouchMode(canWrite);
2271        this.binding.textSendButton.setEnabled(canWrite);
2272        this.binding.textinput.setCursorVisible(canWrite);
2273        this.binding.textinput.setEnabled(canWrite);
2274    }
2275
2276    public void updateSendButton() {
2277        boolean hasAttachments = mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
2278        boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
2279        final Conversation c = this.conversation;
2280        final Presence.Status status;
2281        final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2282        final SendButtonAction action;
2283        if (hasAttachments) {
2284            action = SendButtonAction.TEXT;
2285        } else {
2286            action = SendButtonTool.getAction(getActivity(), c, text);
2287        }
2288        if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
2289            if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2290                status = Presence.Status.OFFLINE;
2291            } else if (c.getMode() == Conversation.MODE_SINGLE) {
2292                status = c.getContact().getShownStatus();
2293            } else {
2294                status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
2295            }
2296        } else {
2297            status = Presence.Status.OFFLINE;
2298        }
2299        this.binding.textSendButton.setTag(action);
2300        this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
2301    }
2302
2303    protected void updateDateSeparators() {
2304        synchronized (this.messageList) {
2305            DateSeparator.addAll(this.messageList);
2306        }
2307    }
2308
2309    protected void updateStatusMessages() {
2310        updateDateSeparators();
2311        synchronized (this.messageList) {
2312            if (showLoadMoreMessages(conversation)) {
2313                this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2314            }
2315            if (conversation.getMode() == Conversation.MODE_SINGLE) {
2316                ChatState state = conversation.getIncomingChatState();
2317                if (state == ChatState.COMPOSING) {
2318                    this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
2319                } else if (state == ChatState.PAUSED) {
2320                    this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
2321                } else {
2322                    for (int i = this.messageList.size() - 1; i >= 0; --i) {
2323                        final Message message = this.messageList.get(i);
2324                        if (message.getType() != Message.TYPE_STATUS) {
2325                            if (message.getStatus() == Message.STATUS_RECEIVED) {
2326                                return;
2327                            } else {
2328                                if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
2329                                    this.messageList.add(i + 1,
2330                                            Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
2331                                    return;
2332                                }
2333                            }
2334                        }
2335                    }
2336                }
2337            } else {
2338                final MucOptions mucOptions = conversation.getMucOptions();
2339                final List<MucOptions.User> allUsers = mucOptions.getUsers();
2340                final Set<ReadByMarker> addedMarkers = new HashSet<>();
2341                ChatState state = ChatState.COMPOSING;
2342                List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2343                if (users.size() == 0) {
2344                    state = ChatState.PAUSED;
2345                    users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2346                }
2347                if (mucOptions.isPrivateAndNonAnonymous()) {
2348                    for (int i = this.messageList.size() - 1; i >= 0; --i) {
2349                        final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
2350                        final List<MucOptions.User> shownMarkers = new ArrayList<>();
2351                        for (ReadByMarker marker : markersForMessage) {
2352                            if (!ReadByMarker.contains(marker, addedMarkers)) {
2353                                addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
2354                                MucOptions.User user = mucOptions.findUser(marker);
2355                                if (user != null && !users.contains(user)) {
2356                                    shownMarkers.add(user);
2357                                }
2358                            }
2359                        }
2360                        final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2361                        final Message statusMessage;
2362                        final int size = shownMarkers.size();
2363                        if (size > 1) {
2364                            final String body;
2365                            if (size <= 4) {
2366                                body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
2367                            } else if (ReadByMarker.allUsersRepresented(allUsers, markersForMessage, markerForSender)) {
2368                                body = getString(R.string.everyone_has_read_up_to_this_point);
2369                            } else {
2370                                body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
2371                            }
2372                            statusMessage = Message.createStatusMessage(conversation, body);
2373                            statusMessage.setCounterparts(shownMarkers);
2374                        } else if (size == 1) {
2375                            statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
2376                            statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
2377                            statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
2378                        } else {
2379                            statusMessage = null;
2380                        }
2381                        if (statusMessage != null) {
2382                            this.messageList.add(i + 1, statusMessage);
2383                        }
2384                        addedMarkers.add(markerForSender);
2385                        if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
2386                            break;
2387                        }
2388                    }
2389                }
2390                if (users.size() > 0) {
2391                    Message statusMessage;
2392                    if (users.size() == 1) {
2393                        MucOptions.User user = users.get(0);
2394                        int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
2395                        statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
2396                        statusMessage.setTrueCounterpart(user.getRealJid());
2397                        statusMessage.setCounterpart(user.getFullJid());
2398                    } else {
2399                        int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
2400                        statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
2401                        statusMessage.setCounterparts(users);
2402                    }
2403                    this.messageList.add(statusMessage);
2404                }
2405
2406            }
2407        }
2408    }
2409
2410    private void stopScrolling() {
2411        long now = SystemClock.uptimeMillis();
2412        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
2413        binding.messagesView.dispatchTouchEvent(cancel);
2414    }
2415
2416    private boolean showLoadMoreMessages(final Conversation c) {
2417        if (activity == null || activity.xmppConnectionService == null) {
2418            return false;
2419        }
2420        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2421        final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2422        return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2423    }
2424
2425    private boolean hasMamSupport(final Conversation c) {
2426        if (c.getMode() == Conversation.MODE_SINGLE) {
2427            final XmppConnection connection = c.getAccount().getXmppConnection();
2428            return connection != null && connection.getFeatures().mam();
2429        } else {
2430            return c.getMucOptions().mamSupport();
2431        }
2432    }
2433
2434    protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2435        showSnackbar(message, action, clickListener, null);
2436    }
2437
2438    protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2439        this.binding.snackbar.setVisibility(View.VISIBLE);
2440        this.binding.snackbar.setOnClickListener(null);
2441        this.binding.snackbarMessage.setText(message);
2442        this.binding.snackbarMessage.setOnClickListener(null);
2443        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2444        if (action != 0) {
2445            this.binding.snackbarAction.setText(action);
2446        }
2447        this.binding.snackbarAction.setOnClickListener(clickListener);
2448        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2449    }
2450
2451    protected void hideSnackbar() {
2452        this.binding.snackbar.setVisibility(View.GONE);
2453    }
2454
2455    protected void sendMessage(Message message) {
2456        activity.xmppConnectionService.sendMessage(message);
2457        messageSent();
2458    }
2459
2460    protected void sendPgpMessage(final Message message) {
2461        final XmppConnectionService xmppService = activity.xmppConnectionService;
2462        final Contact contact = message.getConversation().getContact();
2463        if (!activity.hasPgp()) {
2464            activity.showInstallPgpDialog();
2465            return;
2466        }
2467        if (conversation.getAccount().getPgpSignature() == null) {
2468            activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2469            return;
2470        }
2471        if (!mSendingPgpMessage.compareAndSet(false, true)) {
2472            Log.d(Config.LOGTAG, "sending pgp message already in progress");
2473        }
2474        if (conversation.getMode() == Conversation.MODE_SINGLE) {
2475            if (contact.getPgpKeyId() != 0) {
2476                xmppService.getPgpEngine().hasKey(contact,
2477                        new UiCallback<Contact>() {
2478
2479                            @Override
2480                            public void userInputRequried(PendingIntent pi, Contact contact) {
2481                                startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2482                            }
2483
2484                            @Override
2485                            public void success(Contact contact) {
2486                                encryptTextMessage(message);
2487                            }
2488
2489                            @Override
2490                            public void error(int error, Contact contact) {
2491                                activity.runOnUiThread(() -> Toast.makeText(activity,
2492                                        R.string.unable_to_connect_to_keychain,
2493                                        Toast.LENGTH_SHORT
2494                                ).show());
2495                                mSendingPgpMessage.set(false);
2496                            }
2497                        });
2498
2499            } else {
2500                showNoPGPKeyDialog(false, (dialog, which) -> {
2501                    conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2502                    xmppService.updateConversation(conversation);
2503                    message.setEncryption(Message.ENCRYPTION_NONE);
2504                    xmppService.sendMessage(message);
2505                    messageSent();
2506                });
2507            }
2508        } else {
2509            if (conversation.getMucOptions().pgpKeysInUse()) {
2510                if (!conversation.getMucOptions().everybodyHasKeys()) {
2511                    Toast warning = Toast
2512                            .makeText(getActivity(),
2513                                    R.string.missing_public_keys,
2514                                    Toast.LENGTH_LONG);
2515                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2516                    warning.show();
2517                }
2518                encryptTextMessage(message);
2519            } else {
2520                showNoPGPKeyDialog(true, (dialog, which) -> {
2521                    conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2522                    message.setEncryption(Message.ENCRYPTION_NONE);
2523                    xmppService.updateConversation(conversation);
2524                    xmppService.sendMessage(message);
2525                    messageSent();
2526                });
2527            }
2528        }
2529    }
2530
2531    public void encryptTextMessage(Message message) {
2532        activity.xmppConnectionService.getPgpEngine().encrypt(message,
2533                new UiCallback<Message>() {
2534
2535                    @Override
2536                    public void userInputRequried(PendingIntent pi, Message message) {
2537                        startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2538                    }
2539
2540                    @Override
2541                    public void success(Message message) {
2542                        //TODO the following two call can be made before the callback
2543                        getActivity().runOnUiThread(() -> messageSent());
2544                    }
2545
2546                    @Override
2547                    public void error(final int error, Message message) {
2548                        getActivity().runOnUiThread(() -> {
2549                            doneSendingPgpMessage();
2550                            Toast.makeText(getActivity(), error == 0 ? R.string.unable_to_connect_to_keychain : error, Toast.LENGTH_SHORT).show();
2551                        });
2552
2553                    }
2554                });
2555    }
2556
2557    public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2558        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2559        builder.setIconAttribute(android.R.attr.alertDialogIcon);
2560        if (plural) {
2561            builder.setTitle(getString(R.string.no_pgp_keys));
2562            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2563        } else {
2564            builder.setTitle(getString(R.string.no_pgp_key));
2565            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2566        }
2567        builder.setNegativeButton(getString(R.string.cancel), null);
2568        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2569        builder.create().show();
2570    }
2571
2572    public void appendText(String text, final boolean doNotAppend) {
2573        if (text == null) {
2574            return;
2575        }
2576        final Editable editable = this.binding.textinput.getText();
2577        String previous = editable == null ? "" : editable.toString();
2578        if (doNotAppend && !TextUtils.isEmpty(previous)) {
2579            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG).show();
2580            return;
2581        }
2582        if (UIHelper.isLastLineQuote(previous)) {
2583            text = '\n' + text;
2584        } else if (previous.length() != 0 && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
2585            text = " " + text;
2586        }
2587        this.binding.textinput.append(text);
2588    }
2589
2590    @Override
2591    public boolean onEnterPressed() {
2592        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2593        final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2594        if (enterIsSend) {
2595            sendMessage();
2596            return true;
2597        } else {
2598            return false;
2599        }
2600    }
2601
2602    @Override
2603    public void onTypingStarted() {
2604        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2605        if (service == null) {
2606            return;
2607        }
2608        Account.State status = conversation.getAccount().getStatus();
2609        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2610            service.sendChatState(conversation);
2611        }
2612        updateSendButton();
2613    }
2614
2615    @Override
2616    public void onTypingStopped() {
2617        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2618        if (service == null) {
2619            return;
2620        }
2621        Account.State status = conversation.getAccount().getStatus();
2622        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2623            service.sendChatState(conversation);
2624        }
2625    }
2626
2627    @Override
2628    public void onTextDeleted() {
2629        final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
2630        if (service == null) {
2631            return;
2632        }
2633        Account.State status = conversation.getAccount().getStatus();
2634        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2635            service.sendChatState(conversation);
2636        }
2637        if (storeNextMessage()) {
2638            activity.onConversationsListItemUpdated();
2639        }
2640        updateSendButton();
2641    }
2642
2643    @Override
2644    public void onTextChanged() {
2645        if (conversation != null && conversation.getCorrectingMessage() != null) {
2646            updateSendButton();
2647        }
2648    }
2649
2650    @Override
2651    public boolean onTabPressed(boolean repeated) {
2652        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2653            return false;
2654        }
2655        if (repeated) {
2656            completionIndex++;
2657        } else {
2658            lastCompletionLength = 0;
2659            completionIndex = 0;
2660            final String content = this.binding.textinput.getText().toString();
2661            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2662            int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2663            firstWord = start == 0;
2664            incomplete = content.substring(start, lastCompletionCursor);
2665        }
2666        List<String> completions = new ArrayList<>();
2667        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2668            String name = user.getName();
2669            if (name != null && name.startsWith(incomplete)) {
2670                completions.add(name + (firstWord ? ": " : " "));
2671            }
2672        }
2673        Collections.sort(completions);
2674        if (completions.size() > completionIndex) {
2675            String completion = completions.get(completionIndex).substring(incomplete.length());
2676            this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2677            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2678            lastCompletionLength = completion.length();
2679        } else {
2680            completionIndex = -1;
2681            this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2682            lastCompletionLength = 0;
2683        }
2684        return true;
2685    }
2686
2687    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2688        try {
2689            getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2690        } catch (final SendIntentException ignored) {
2691        }
2692    }
2693
2694    @Override
2695    public void onBackendConnected() {
2696        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2697        String uuid = pendingConversationsUuid.pop();
2698        if (uuid != null) {
2699            if (!findAndReInitByUuidOrArchive(uuid)) {
2700                return;
2701            }
2702        } else {
2703            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
2704                clearPending();
2705                activity.onConversationArchived(conversation);
2706                return;
2707            }
2708        }
2709        ActivityResult activityResult = postponedActivityResult.pop();
2710        if (activityResult != null) {
2711            handleActivityResult(activityResult);
2712        }
2713        clearPending();
2714    }
2715
2716    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
2717        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2718        if (conversation == null) {
2719            clearPending();
2720            activity.onConversationArchived(null);
2721            return false;
2722        }
2723        reInit(conversation);
2724        ScrollState scrollState = pendingScrollState.pop();
2725        String lastMessageUuid = pendingLastMessageUuid.pop();
2726        List<Attachment> attachments = pendingMediaPreviews.pop();
2727        if (scrollState != null) {
2728            setScrollPosition(scrollState, lastMessageUuid);
2729        }
2730        if (attachments != null && attachments.size() > 0) {
2731            Log.d(Config.LOGTAG, "had attachments on restore");
2732            mediaPreviewAdapter.addMediaPreviews(attachments);
2733            toggleInputMethod();
2734        }
2735        return true;
2736    }
2737
2738    private void clearPending() {
2739        if (postponedActivityResult.clear()) {
2740            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
2741        }
2742        if (pendingScrollState.clear()) {
2743            Log.e(Config.LOGTAG, "cleared scroll state");
2744        }
2745        if (pendingTakePhotoUri.clear()) {
2746            Log.e(Config.LOGTAG, "cleared pending photo uri");
2747        }
2748    }
2749
2750    public Conversation getConversation() {
2751        return conversation;
2752    }
2753}